Portable electronic device

ABSTRACT

A liquid crystal cell ( 3 ), a circuit substrate ( 12 ) and a battery holder ( 10 ) are housed in a case body composed of an upper cover ( 8   a ) having a display window, a lower cover ( 8   b ) and a frame ( 9 ). A connector including a large number of signal terminals is connected to one end of the circuit substrate ( 12 ), and the circuit substrate is arranged on the liquid crystal cell ( 3 ) one above the other within the case body. The battery holder ( 10 ) is arranged in parallel to the circuit substrate ( 12 ).

TECHNICAL FIELD

This invention relates to a portable electronic equipment which has aninformation storage function inside a body thereof and may be connectedto an external terminal equipment such as a personal computer to enabledisplay of required information on a display screen of the body.

BACKGROUND ART

Recently, a portable electronic equipment having a circuit substrate, aconnector and a liquid crystal cell or the like has been in use in largenumbers. In Japanese Utility Model Application Laid-open No. 63-72651,for instance, there is disclosed the technique of a portable electronicequipment in the prior art. A description will be given of its outlinewith reference to FIGS. 15 and 16 in the following.

In a portable electronic equipment 100, a connector 102 connected to anexternal data input device 101 such as a personal computer is mounted onthe side of a case 106. Also, a display section 107 and an operatingsection 110 composed of index, page and mode or like operation keys 108and cursor operation keys 109 are provided on the surface of the case106.

Further, a storage section composed of a central processing unit (CPU)103, a random access memory (RAM) 104 and a read-only memory (ROM) 105or the like and a display device such as a liquid crystal cell areincorporated in the case 106.

Upon receipt of desired data from the external data input device 101 byconnecting the external data input device 101 to the connector 102 ofthe portable electronic equipment 100, this data is stored in thestorage section through an input/output control section 111. The datastored in the storage section is processed on the basis of an operatingsignal from the operating section 110 and is then displayed on thedisplay section 107 through the input/output control section 111.

However, this portable electronic equipment 100 is larger in size than acredit card and does not meet the requirements of “a PC card” of PCMCIA(Personal Computer Memory Card International Association) standard type.

In this connection, a telephone directory electronic calculator card hasbeen developed as a PC card of standard PCMCIA type and was patented onOct. 15, 1996 in U.S.A. (Design Patent No. 374,661). This PC card 200has an external appearance as shown in FIG. 17 and is combined with apersonal computer having a PC card slot to enable reception of data fromthe personal computer.

The PC card 200 shown in FIG. 17 has already come into the market fromIBM Co., Inc. by the trade name of “Chip Card”. This PC card is mountedwith a display 202 and a keyboard 203 on a body 201 within its limitedsurface space of a credit card size and also with a connector of PCMCIAtype (not shown) and a CPU or the like serving as an operating functionof a personal computer on the inside of the body 201 and uses two buttonbatteries. In addition, this PC card is also mounted with a chargingback-up battery capable of protecting data even in exchange of a batteryfor operation.

However, this PC card is mounted with the display and the keyboard orthe like within the limited surface space of the credit card size asdescribed above. Incidentally, although the keyboard having a pluralityof keys embedded in the surface of the body is convenient in keyinputting in case of retrieval in the outdoors or data inputting at aminimum in the place where a user has gone out, the area of the keyboardamounts to a large percentage in the limited area of the body, and thedisplay is accordingly restricted to a narrow area, resulting in anoccurrence of a problem that an information content visible at a time isreduced in the extreme.

Further, in Japanese Patent Application Laid-open No. 8-58275, there isdisclosed a portable electronic equipment as a different instance of theportable electronic equipment having a circuit substrate, a connectorand a liquid crystal cell or the like.

A description will now be given of this portable electronic equipment100 with reference to a fragmentary sectional view of FIG. 18.

The portable electronic equipment 100 includes a circuit substrate 101and electric components 102 such as IC chips mounted on the circuitsubstrate 101. The circuit substrate 101 and the electric components 102are arranged between upper and lower outer metal plates 107 and aresealed up with a seal layer 103.

This seal layer 103 has a plurality of (for instance, four) throughholes 104 extending from the front and back surfaces to the circuitsubstrate 101. A ground electrode 105 is arranged on the circuitsubstrate 101 at a position corresponding to the through hole 104. Thus,the ground electrode 105 is communicated with the outside through thisthrough hole 104 when the upper outer metal plate 107 is removed.

A coil type metal spring 106 is inserted into each through hole 104provided in the seal layer 103. When the outer metal plate 107 is stuckon both of the front surface (the upper surface) and the back surface(the lower surface) of the seal layer 103, the metal spring 106 in eachthrough hole 104 is contracted, and one end of each metal spring 106presses the inside surface of the outer metal plate 107. As a result,the circuit substrate 101 and the outer metal plates 107 areelectrically connected together through the metal springs 106, and theouter metal plates 107 are thus grounded. An electric charge isdischarged from the circuit substrate 101 through the metal springs 106.

On the other hand, a connector 109 is connected to one end of thecircuit substrate 101 through a pair of metal pieces 108. These metalpieces 108 are sealed up with the seal layer 103. The thickness of theconnector 109 is set to be equal to the thickness of the seal layer 103.

According to the portable electronic equipment 100 shown in FIG. 18,since four through holes are provided in the seal layer for mounting themetal springs electrically connected to the ground terminals of thecircuit substrate, and four metal springs are required, there is a needfor more working steps, more part cost and more incorporating steps orthe like, resulting in an increase in cost.

DISCLOSURE OF THE INVENTION

It is an object of the present invention to provide a portableelectronic equipment, which is based on PCMCIA standard and enablesdisplay of more information content on one image screen by enlarging anarea of a display within a limited space of a credit card size.

For attaining the above object, a portable electronic equipmentaccording to the present invention comprises a case body composed of anupper cover having a display window, a lower cover and a frame arrangedalong the peripheral edges of the upper and lower covers facing eachother to define an inside space, and inside components including aliquid crystal cell, a circuit substrate and a battery holder and housedin the inside space of the case body, wherein the liquid crystal cell isarranged at a position corresponding to the display window of the uppercover of the case body, the circuit substrate is bonded to a connectorincluding a large number of signal terminals capable of being connectedto a connector provided on an external equipment and is arranged on theliquid crystal cell one above the other in the case body, and thebattery holder is arranged on one end of the circuit substrate.

According to the present invention, a large integrated circuit ismounted in the limited space to enable expansion of a processingfunction, and it is possible to increase a ratio of the area of adisplay to the surface area of the equipment body.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a stop view showing a portable electronic equipment accordingto one embodiment of the present invention;

FIG. 2 is a view of the portable electronic equipment of FIG. 1 as seenfrom the back side;

FIG. 3 is a view of the portable electronic equipment of FIG. 1 as seenfrom the side;

FIG. 4 is an exploded view showing the portable electronic equipment ofFIG. 1;

FIG. 5 is a plan view showing the state, in which a liquid crystal cellpositioned on an upper cover is connected to a circuit substrate througha FPC;

FIG. 6 is a fragmentary enlarged-scale view showing the state, in whichthe liquid crystal cell of FIG. 5 is positioned on a frame;

FIG. 7 is a view showing the state, in which a circuit substrate isplaced on the liquid crystal cell of FIG. 5 one above the other and isprovided with a battery holder, that is, the state of the portableelectronic equipment of FIG. 1 where a lower cover is removed to lookthe inside through that place;

FIG. 8A is a fragmentary enlarged-scale view showing the state of acaulking pin shown in a portion A indicated by an arrow of FIG. 7 beforebeing caulked;

FIG. 8B is a fragmentary enlarged-scale view showing the state of thecaulking pin of FIG. 8A after being caulked;

FIG. 8C is a sectional view taken on line A—A of FIG. 8B;

FIG. 9 is a sectional view taken on line B—B of FIG. 7;

FIG. 10 is a sectional view taken on line C—C of FIG. 7;

FIG. 11 is a view of a leaf spring member fixed in position to thecircuit substrate of FIG. 7 as seen from a direction D of FIG. 7;

FIG. 12 is a bottom view showing the leaf spring member of FIG. 11;

FIG. 13 is a view for explaining the state, in which the leaf springmember of FIG. 11 is fixed in position to the circuit substrate;

FIG. 14 is a fragmentary enlarged-scale view showing a portion Aindicated by an arrow of FIG. 2, together with the positional relationbetween the leaf spring member of FIG. 11 and an operating through holeformed in a lower cover;

FIG. 15 is a perspective view showing the external appearance of aportable electronic equipment in the prior art;

FIG. 16 is a block diagram showing the configuration of a controlsection of the portable electronic equipment of FIG. 15;

FIG. 17 is a perspective view showing the external appearance of aportable electronic equipment in the prior art of a different type; and

FIG. 18 is a fragmentary sectional view showing the inside structure ofa portable electronic equipment in the prior art of a further differenttype.

BEST MODE FOR CARRYING OUT THE INVENTION

A portable electronic equipment 1 according to the present inventionrelates to an equipment of a credit card size based on “PC CardStandard” determined by PCMCIA.

This portable electronic equipment 1 has a size based on a type II of“PC Card Standard”, for instance, and comprises a thin rectangularcard-shaped body having a thickness T of 5 mm, a length L of 85.6 mm anda width W of 54 mm.

As shown in FIG. 1, a rectangular display section 4 is provided in thecenter of the front surface of the portable electronic equipment 1. Thisdisplay section 4 is equivalent to a liquid crystal cell 3 formed by aliquid crystal display element. In a right peripheral portion of thesurface of the portable electronic equipment 1 as seen from FIG. 1, aplurality of, for instance, five operation input keys 5 a, 5 b, 5 c, 5 dand 5 e are arranged in a row at predetermined intervals in a directionparallel to the right edge of the portable electronic equipment 1. Thesefive keys 5 a to 5 e form an operating member 5.

Among the keys of the operating member 5, the key 5 a is assigned forpage return, the key 5 b is for page turning, the key 5 c is for inputand keys 5 d and 5 e are for cursor shift, for instance.

The portable electronic equipment 1 including the display section 4 andvarious operation input keys 5 a to 5 e is applied in various modes suchas a schedule table, a calendar and a directory.

On the left edge of the portable electronic equipment 1, a connector 7based on the standard of PCMCIA is connected to a circuit substratewhich will be described later, as shown in FIG. 3. The connector 7 isprovided with a large number of signal terminals and an external powersupply terminal, which are capable of being connected to a connectorprovided on an external equipment (not shown) such as a personalcomputer, in parallel. The connector 7 of the portable electronicequipment 1 is connected to the connector of the personal computer toenable storage of data from the personal computer into the portableelectronic equipment 1 of FIG. 1.

The front surface of the portable electronic equipment 1, that is, thesurface provided with the display section, is formed by a metallic uppercover 8 a having a thickness of 0.15 mm, and the back surface thereof isformed by a metallic lower cover 8 b (see FIG. 2) having a thickness of0.15 mm.

As shown in FIG. 1, the upper cover 8 a has a stepped portion 20 in itsperipheral portion for positioning the liquid crystal cell 3 and alsohas a display window 6 in the center.

As shown in FIG. 2, a peripheral portion of the lower cover 8 b issubjected to drawing for enhancement of the strength of the lower cover8 b. The lower cover 8 b has a small hole 8 f, which allows the passageof a machine screw, in each of four corners. The lower cover 8 b furtherhas an operating through hole 8 e, which is available for operating athird arm portion of a leaf spring member as will be described later, inthe vicinity of a stepped portion formed by drawing.

A frame 9 is arranged along the peripheral edges of the upper cover 8 aand the lower cover 8 b facing the upper cover 8 a to define an insidespace (i.e., a space to house the inside components including a circuitsubstrate, a liquid crystal cell and a battery holder, which will bedescribed later). The frame 9 is formed by a plastic material and isbonded to the upper cover 8a after being outsert-molded to the uppercover 8 a. Incidentally, it is to be understood that the frame 9 is notbonded to all over the four sides of the rectangular upper cover 8 a,but it may be bonded to over the three sides excluding the side providedwith the connector, as shown in FIG. 7.

The frame 9 has a screw hole 9 a, which allows the insertion of a tipscrew portion of the machine screw, at a position corresponding to eachof the small holes 8 f for the passage of the machine screws in the fourcorners of the lower cover 8 b.

When the machine screw (not shown) is inserted into each of the smallholes 8 f for the passage of the machine screws in the four corners ofthe lower cover 8 b to bring the tip screw portion of the machine screwinto engagement with each of the screw holes 9 a formed in the fourcorners of the frame 9 bonded to the upper cover 8 a, the upper cover 8a, the lower cover 8 b and the frame 9 are connected together into theassemblage of a case body of the portable electronic equipment 1.

As shown in the exploded view of FIG. 4, the inside components includingthe liquid crystal cell 3, the circuit substrate 12 and the batteryholder 10 or the like are housed in the case body, resulting in thecompletion of the assemblage of the portable electronic equipment.Incidentally, the inside components including the liquid crystal cell 3,the circuit substrate 12 and the battery holder 10 or the like will bedescribed later in detail.

The portable electronic equipment 1 has the battery holder (see FIG. 7)10, which will be described later, at a portion corresponding to theposition right beneath the operating member 5. This battery holder 10contains two button-shaped batteries 25 a, 25 b and also enables theinsertion or removal of these batteries 25 a, 25 b individually.

FIG. 5 shows the state, in which the liquid crystal cell 3 positioned onthe upper cover 8 a is connected to the circuit substrate 12 through anFPC (flexible printed circuit) 11. One end of the FPC 11 is connected toone peripheral portion of the liquid crystal cell 3, while the other endof the FPC 11 is connected to one peripheral portion of the circuitsubstrate 12, so that the liquid crystal cell 3 and the circuitsubstrate 12 are connected together through the FPC 11.

Incidentally, the circuit substrate 12 shown in FIG. 5 is placed in thestate of being unfolded from the liquid crystal cell 3 positioned on theupper cover 8a, while the pivotal motion (reversal) of the circuitsubstrate 12 about the FPC 11 causes the FPC 11 to be bent freely, andtherefore, the circuit substrate 12 is changed to the state of beingplaced on the liquid crystal cell one above the other.

Further, the circuit substrate 12 has the connector 7 fitted to aperipheral portion adjoining to the peripheral portion, to which the FPC11 is connected. The connector 7 sandwiches the peripheral portion ofthe circuit substrate 12 between a large number of signal terminalsprovided in two rows and is connected to the circuit substrate 12 bysoldering.

As shown in FIGS. 5 and 6, the frame 9 has positioning guides 9 b, 9 cand 9 d of the inwardly projected shape on the inside surface of theside facing the side opposed to the FPC 11. The liquid crystal cell 3 isput into the space defined by the frame 9 bonded to the upper cover 8 ain the manner of allowing one edge of the liquid crystal cell to beguided by these positioning guides 9 b, 9 c and 9 d. Then, the liquidcrystal cell 3 is bonded to the frame 9 with a fixing means such as adouble coated tape.

The action of folding the FPC 11 causes the circuit substrate 12 tochange from the state of being unfolded from the liquid crystal cell 3as shown in FIG. 5 to the state of being folded over the liquid crystalcell 3, that is, the state, in which the liquid crystal cell (shown by adotted line) and the circuit substrate 12 are placed one above the otheras shown in FIG. 7. Then, the connector 7 is bonded to the back surfaceof the upper cover 8 a with a fixing means such as a double coated tape.

When the circuit substrate 12 connected to the liquid crystal cell 3through the FPC 11 is placed on the liquid crystal cell 3, which ispositioned on the upper cover 8 a, one above the other, the FPC 11 isbent in the U-like shape, and its bent portion is projected sideward.However, among the sides of the frame 9, the side opposed to the FPC 11bent in the U-like shape is of concave structure in section, as shown inFIG. 10. Thus, since a part of the FPC bent in the U-like shape ishoused in a concave portion of the frame 9, the edge of the liquidcrystal cell and that of the circuit substrate 12 may be accordinglybrought close to the frame 9, resulting in an increase of the circuitsubstrate and the display section in size.

Further, the battery holder 10 is arranged on the opposite side to theconnector 7 in the circuit substrate 12. In this case, the batteryholder 10 and the circuit substrate 12 may be connected to the frame 9simultaneously (see FIG. 8C) in the manner of aligning a caulkingportion formed on the end of the battery holder 10 and a caulkingportion of the circuit substrate 12 with a caulking pin 9 e (and also acaulking pin 9 f shown in FIG. 7) formed on the frame 9 united with theupper cover 8 a after being outsert-molded thereto as shown in FIG. 8Aand then thermally caulking the caulking pin 9 e as shown in FIG. 8B.

As shown in FIG. 7, the battery holder 10 is composed of a resin-madebattery frame 10 a containing two button batteries 25 a, 25 b parallelto each other, two cover portions 10 b united with the battery frame 10a and flexibly turned about their roots for the opening or closingmotion in case of inserting or removing the batteries 25 a, 25 b, andtwo battery contact springs 10 c, and minus-side ends 10 d of the twobattery contact springs 10 c are respectively connected to the terminals12 a on the circuit substrate 12 by soldering. On the other hand,plus-side ends 10 f of the two battery contact springs 10 e arerespectively energized to make contact with the side surfaces of thebatteries 25 a, 25 b whenever these batteries are housed.

The circuit substrate 12 is mounted with a control device or the likecomposed of an SRAM 14 serving as a volatile memory for the storage ofdata, an IC 15 of a gate array containing a driver or the like fordriving a display device for display, a CPU 16 for reading out thestored data from the volatile memory to display the read-out data on thedisplay section 4 and a ROM 17.

As shown in FIG. 9, the operating member 5 composed of the keys 5 a to 5e (see FIG. 1) is arranged on a portion above the housing portion of thebattery holder 10 (shown by a chain line in FIG. 9) in the upper cover 8a formed by the metal thin plate. This operating member 5 is provided inthe form of a switch block 13 having an inside connection wiring andholds a plurality of keys 5 a to 5 e in one block. This switch block 13is fixed in position to the inside of a concave portion 8 d provided onthe upper cover 8 a, and a FPC 13 a of the switch block 13 is insertedinto the connector 12 b of the circuit substrate 12 through a connectionhole 8 c provided in a part of the upper cover 8 a.

Then, as described above, the machine screw is inserted into each of thesmall holes 8 f for the passage of the machine screws in the fourcorners of the lower cover 8 b to bring the end screw portion of themachine screw into engagement with each of the screw holes 9 a formed inthe four corners of the frame body 9. Thereupon, the frame 9 is bondedto the upper cover 8 a, and the liquid crystal cell is positioned on theupper cover 8 a by the aid of the stepped portion 20, resulting in thecompletion of the assemblage of the portable electronic equipment 1covered with the upper cover 8 a, the lower cover 8 b and the frame 9.

A description will now be given of a ground terminal of the circuitsubstrate 12.

As shown in FIG. 7, a ground (GND) terminal 12 c is formed on aperipheral portion of the circuit substrate 12. A leaf spring member 18,which will be described later, is bonded to the ground terminal 12 bysoldering.

Then, a description will now be given of the leaf spring member 18 withreference to FIGS. 11 and 12.

The leaf spring member 18 is formed by pressing a thin plate such as aSUS material and has a body portion integrally provided with a first armportion 18a, a second arm portion 18 b, a third arm portion 18 c and twopositioning portions 18 d.

The first arm portion 18 a has an end portion a1 bent to be capable ofmaking contact with the upper cover 8 a under pressure. The second armportion 18 b has an end portion a2 bent to be capable of making contactwith the lower cover 8 b under pressure. The third arm portion 18 c hasan end portion a3 bent to be capable of making contact with a switchingpattern 12 d (see FIG. 7, and its description will be given later)provided on the circuit substrate 12. Further, a press portion d1corresponding to the operating through hole 8 d (see FIG. 2) formed inthe lower cover 8 b is formed on the upper surface of the third armportion 18 c.

The first to third arm portions 18 a, 18 b and 18 c of the leaf springmember 18 having spring properties. Further, the leaf spring member 18is positioned on the circuit substrate 12 by the aid of the twopositioning portions 18 d.

As shown in FIG. 13, the leaf spring member 18 is positioned on thecircuit substrate in the manner of inserting each positioning portion 18d of the leaf spring member 18 into the ground terminal 12 c (see FIG.7) of the circuit substrate 12. Then, the end of each positioningportion 18 d and the ground terminal 12 c are connected together bysoldering. A reference numeral 18 e in FIG. 13 denotes a solderedportion.

After having passed through an opening portion 12 e formed by notchingin the peripheral portion of the circuit substrate 12, the end portional of the first arm portion 18 a makes contact with the inner wallsurface of the upper cover 8 a and then passes the inner wall surface ofthe upper cover 8 a by making use of the spring property of the firstarm portion 18 a. At the same time, the second arm portion 18 b makescontact with the inner wall surface of the lower cover 8 b and pressesthe inner surface of the lower cover 8 b by making use of the springproperty.

As described above, the circumference of the lower cover 8 b issubjected to drawing for enhancement of the strength of the lower cover8 b. As shown in FIG. 13, the operating through hole 8 e for operatingthe third arm portion 18 c of the leaf spring member 18 is formed in thevicinity of the stepped portion of a portion 8 d formed by drawing.

FIG. 14 shows the positional relation between the operating through hole8 e formed in the lower cover 8 b and the leaf spring member 18. In FIG.14, the position of the leaf spring member 18 is shown by a dashed line.Referring to FIG. 14, it is understood that the press portion a3 of thethird arm portion 18 c may be seen through the operating through hole 8e.

As described above, since the operating through hole 8 e is formed inthe vicinity of the stepped portion of the portion 8 d formed by drawingand therefore, shows high strength, any deformation of the lower cover 8b does not occur easily even if an unexpected external force is appliedto a portion of this operating through hole, and the lower cover neverpresses the press portion d of the third arm portion 18 c.

When each positioning portion 18 d of the leaf spring member 18 isinserted into the ground terminal 12 c of the circuit substrate 12,while the first arm portion 18 a of the leaf spring member 18 is placedin the state of pressing the inner wall surface of the upper cover 8 a,and the second arm portion is placed in the state of pressing the innerwall surface of the lower cover 8 b, the electrical connection is madebetween the upper and lower covers 8 a, 8 b and the circuit substrate12, and as a result, the upper and lower covers 8 a, 8 b are grounded.

Further, the third arm portion 18 c is operated from the outside throughthe operating through hole 8 e formed in the lower cover 8 b to therebybring the third arm portion 18 c into contact with the switching pattern12 d, and therefore, it is possible to put a reset function to work.

As described above, the portable electronic equipment according to thepresent invention is equivalent to a PC card having a size equal to acredit card size and based on PCMCIA standard type. The connector isunited with the circuit substrate, and the liquid crystal cell isfurther united with the circuit substrate through the FPC. This portableelectronic equipment is of arrangement structure, in which the liquidcrystal cell is mounted in the case body after being positioned therein,the FPC is folded to place the circuit substrate on the bottom surfaceof the liquid crystal cell one above the other, the battery holder isprovided on one end of the circuit substrate, and the connector isprovided on the other end thereof. Thus, it becomes possible to providethe portable electronic equipment which may be mounted with a largeintegrated circuit to enable expansion of a processing function in thelimited space, while enabling display of more information content on oneimage screen by enlarging an area of the display within the area of thebody to the maximum.

Further, the portable electronic equipment in the present invention issimple in structure, since it mounts one leaf spring member having atleast three arm portions on the peripheral portion of the circuitsubstrate such that two arm portions make electrical connection betweenthe cover members to be grounded and the circuit substrate and serve asa magnetic shield to make it possible to remove a disturbance componentprovided from the outside and also to discharge the electric charge fromthe circuit substrate. Further, it becomes possible to provide theportable electronic equipment having a structure of the leaf springmember formed by a less-expensive and multifunctional united member, inwhich the other arm portion exerts a reset function by bringing theother arm portion into contact with the switch pattern on the circuitsubstrate through the operation of the operating through hole with a pinor the like.

What is claimed is:
 1. A portable electronic equipment, comprising: acase body composed of an upper cover having a display window, a lowercover arranged at a position facing said upper cover and a framearranged along the peripheral edges of said upper cover and said lowercover to define an inside space; and inside components housed in saidinside space of said case body and including a circuit substrate, aliquid crystal cell of a size to substantially cover said circuitsubstrate, and a battery holder for holding button-shaped batteries;wherein a connector including a large number of signal terminals isbonded to one side end of said circuit substrate, and said connector hasa length substantially equal to the width of said one side end of thecircuit substrate; and said battery holder is arranged on the side ofsaid circuit substrate opposite to the connector, while said liquidcrystal cell is arranged on an upper surface side of said circuitsubstrate to substantially cover said circuit substrate.
 2. A portableelectronic equipment according to claim 1, wherein said upper cover andsaid lower cover are formed by a metal thin plate, and said frame ismade of a resin.
 3. A portable electronic equipment according to claim1, wherein said liquid crystal cell is connected to the circuitsubstrate through a flexible printed circuit (FPC).
 4. A portableelectronic equipment according to claim 1, wherein one end of said FPCis bonded to one peripheral portion of the liquid crystal cell, whilethe other end thereof is connected to a peripheral portion of saidcircuit substrate correspondingly to said peripheral portion of saidliquid crystal cell, and said FPC is bent between the liquid crystalcell and the circuit substrate placed one above the other in said casebody.
 5. A portable electronic equipment according to claims 4, whereinsaid frame has a concave portion for housing a bent portion of said FPC.6. A portable electronic equipment comprising: a case body composed ofan upper cover having a display window, a lower cover arranged at aposition facing said upper cover and a frame arranged along theperipheral edges of said upper cover and said lower cover to define aninside space; and inside components housed in said inside space of saidcase body and including a circuit substrate, a liquid crystal cell of asize to substantially cover said circuit substrate, and a battery holderfor holding button-shaped batteries, wherein a connector including alarge number of signal terminals is bonded to one side end of saidcircuit substrate; said battery holder is arranged on the side of saidcircuit substrate opposite to the connector, while said liquid crystalcell is arranged on an upper surface side of said circuit substrate tosubstantially cover said circuit substrate; and an operating member isarranged in said upper cover at a portion above the battery holderhoused in said case body.
 7. A portable electronic equipment accordingto claim 6, wherein said operating member includes a switch block havingan inside connection wiring, and this switch block is fixed to saidupper cover, while said inside connection wiring is connected to thecircuit substrate through a connection hole formed in a part of theupper cover.
 8. A portable electronic equipment according to claim 7,wherein said upper cover has a concave portion for positioning saidswitch block.
 9. A portable electronic equipment according to claim 7,wherein said upper cover has a connection hole in the vicinity of aportion provided with the switch block, and the wiring of said switchblock is connected to said circuit substrate through the FPC passingthrough said connection hole.
 10. A portable electronic equipment,comprising: a case body composed of an upper cover having a displaywindow, a lower cover arranged at a position facing said upper cover anda frame arranged along the peripheral edges of said upper cover and saidlower cover to define an inside space; and inside components housed insaid inside space of said case body and including a circuit substrate, aliquid crystal cell of a size to substantially cover said circuitsubstrate, and a battery holder for holding button-shaped batteries,wherein a connector including a large number of signal terminals isbonded to one side end of said circuit substrate; said battery holder isarranged on the side of said circuit substrate opposite to theconnector, while said liquid crystal cell is arranged on an uppersurface side of said circuit substrate to substantially cover saidcircuit substrate; and said battery holder has a resin-made batteryframe and a battery connection spring, and said battery frame is fixedto the frame of said case body, while said battery connection spring iselectrically connected to a terminal on said circuit substrate.
 11. Aportable electronic equipment, comprising: a case body composed of anupper cover having a display window, a lower cover arranged at aposition facing said upper cover and a frame arranged along theperipheral edges of said upper cover and said lower cover to define aninside space and inside components housed in said inside space of saidcase body and including a circuit substrate, a liquid crystal cell of asize to substantially cover said circuit substrate, and a battery holderfor holding button-shaped batteries, wherein a connector including alarge number of signal terminals is bonded to one side end of saidcircuit substrate; said battery holder is arranged on the side of saidcircuit substrate opposite to the connector, while said liquid crystalcell is arranged on an upper surface side of said circuit substrate tosubstantially cover said circuit substrate; said upper cover and saidlower cover are formed by a metal thin plate, and said frame is made ofa resin; and said frame has a caulking pin projected from a portioncorresponding to said inside components, while said inside componentshave a hole or a concave portion brought into engagement with saidcaulking pin for fixing said inside components to said frame by caulkingthe caulking pin after inserting or fitting said caulking pin into thehole or to the concave portion of said inside components.
 12. A portableelectronic equipment according to claim 11, wherein at least two of saidinside components within said fame are simultaneously fixed to saidframe by caulking.
 13. A portable electronic equipment according toclaim 12, wherein at least said two inside components include thecircuit substrate and the battery holder.
 14. A portable electronicequipment, comprising: a case body composed of an upper cover having adisplay window, a lower cover arranged at a position facing said uppercover and a frame arranged along the peripheral edges of said uppercover and said lower cover to define an inside space; and insidecomponents housed in said inside space of said case body and including acircuit substrate, a liquid crystal cell of a size to substantiallycover said circuit substrate, and a battery holder for holdingbutton-shaped batteries, wherein a connector including a large number ofsignal terminals is bonded to one side end of said circuit substrate;said battery holder is arranged on the side of said circuit substrateopposite to the connector, while said liquid crystal cell is arranged onan upper surface side of said circuit substrate to substantially coversaid circuit substrate; said upper cover and said lower cover are formedby a metal thin plate, and said frame is made of a resin; and saidcircuit substrate has a ground terminal and a switch pattern and ismounted with a leaf spring member including a first arm portion, asecond arm portion and a third arm portion, the leaf spring memberitself is electrically connected to the ground terminal, the first armportion is bent to be capable of making contact with said upper coverunder pressure, the second arm portion is bent to be capable of makingcontact with said lower cover under pressure, and the third arm portionis bent to be capable of making contact with said switch portion.
 15. Aportable electronic equipment according to claim 14, wherein said upperor lower cover has an operating through hole, which is available foroperating the third arm portion, at a position corresponding to saidthird arm portion.
 16. A portable electronic equipment according toclaim 14, wherein the end of said first or second arm portion is broughtinto contact with the upper or lower cover under pressure after havingpassed through an opening portion formed in said circuit substrate. 17.A portable electronic equipment according to claim 16, wherein said leafspring member is mounted on the peripheral portion of said circuitsubstrate.
 18. A portable electronic equipment according to claim 15,wherein one cover having said operating through hole out of the upperand lower covers has a portion formed by drawing, and the operatingthrough hole of said third arm portion is provided in the vicinity ofthe stepped portion of said portion formed by drawing.
 19. A portableelectronic equipment, comprising: a case body; a circuit substrate; aliquid crystal cell of a size to substantially cover said circuitsubstrate; and a battery holding member for holding two button-shapedbatteries in parallel, said circuit substrate, said liquid crystal celland said battery holding member being housed in an inside space of saidcase body, wherein a connector including a large number of signalterminals is connected to one side end of said circuit substrate suchthat an end of said connector is exposed to the outside through one sideend of said case body; said battery holding member is arranged on theside of the circuit substrate opposite said connector; an other end ofsaid body casing defines a battery insertion port for mounting the twobutton-shaped batteries on said battery holding member or for taking outof said button-shaped batteries therefrom; said liquid crystal cell isarranged on an upper surface side of said circuit substrate to coversaid circuit substrate; and a plurality of operation input keys arearranged in a row in a peripheral portion close to the battery insertionport on the front surface of said case body.
 20. A portable electronicequipment, comprising: a case body; a circuit substrate; a liquidcrystal cell of a size to substantially cover said circuit substrate;and a battery holding member for holding two button-shaped batteries inparallel, said circuit substrate, said liquid crystal cell and saidbattery holding member being housed in an inside space of said casebody, wherein a connector including a large number of signal terminalsis connected to one side end of said circuit substrate such that an endof said connector is exposed to the outside through one side end of saidcase body; said battery holding member is arranged on the side of thecircuit substrate opposite said connector; an other end of said bodycasing defines a battery insertion port for mounting the twobutton-shaped batteries on said battery holding member or for taking outof said button-shaped batteries therefrom; said liquid crystal cell isarranged on an upper surface side of said circuit substrate to coversaid circuit substrate; and said battery holding member has a framecontaining two batteries individually and a pair of movable covers forclosing said battery insertion port, said frame and said covers beingformed as one body.
 21. A portable electronic equipment, comprising: acase body composed of an upper cover having a display window, a lowercover arranged at a position facing said upper cover and a framearranged along the peripheral edges of said upper cover and said lowercover to define an inside space; and inside components housed in saidinside space of said case body and including a circuit substrate, aliquid crystal cell of a size to substantially cover said circuitsubstrate, and a battery holder for holding button-shaped batteries,wherein a connector including a large number of signal terminals isbonded to one side end of said circuit substrate; said battery holder isarranged on the side of said circuit substrate opposite to theconnector, while said liquid crystal cell is arranged on an uppersurface side of said circuit substrate to substantially cover saidcircuit substrate; and said liquid crystal cell arranged on said uppersurface side of said circuit substrate partly protrudes from saidcircuit substrate and is placed on at least a part of said batteryholder, which is arranged on the other side of said circuit substrate,one above the other.
 22. A portable electronic equipment according toclaim 1, wherein said battery holder is to hold two button-shapedbatteries in parallel.
 23. A portable electronic equipment, comprising:a case body composed of an upper cover having a display window, a lowercover arranged at a position facing said upper cover and a framearranged along the peripheral edges of said upper cover and said lowercover to define an inside space; and inside components housed in saidinside space of said case body and including a circuit substrate, aliquid crystal cell of a size to substantially cover said circuitsubstrate, and a battery holder for holding button-shaped batteries,wherein a connector including a large number of signal terminals isbonded to one side end of said circuit substrate; said battery holder isarranged on the side of said circuit substrate opposite to theconnector, while said liquid crystal cell is arranged on an uppersurface side of said circuit substrate to substantially cover saidcircuit substrate; said battery holder is to hold two button-shapedbatteries in parallel; and said battery holder is formed to besubstantially equal in width to said circuit substrate.
 24. A portableelectronic equipment according to claim 13, wherein said circuitsubstrate and said battery holder are fixed by caulking to each other atboth ends facing each other.
 25. A portable electronic equipmentcomprising: a case body; a circuit substrate; a liquid crystal cell of asize to substantially cover said circuit substrate; and a batteryholding member for holding two button-shaped batteries in parallel, saidcircuit substrate, said liquid crystal cell and said battery holdingmember being housed in an inside space of said case body; wherein aconnector including a large number of signal terminals is connected toone side end of said circuit substrate such that an end of saidconnector is exposed to the outside through one side end of said casebody, and said connector has a length substantially equal to the widthof said one side end of the circuit substrate; said battery holdingmember is arranged on the side of the circuit substrate opposite saidconnector; an other end of said body casing defines a battery insertionport for mounting the two button-shaped batteries on said batteryholding member or for taking out of said button-shaped batteriestherefrom; and said liquid crystal cell is arranged on an upper surfaceside of said circuit substrate to cover said circuit substrate.
 26. Aportable electronic equipment, comprising: a case body; a circuitsubstrate; a liquid crystal cell of a size to substantially cover saidcircuit substrate; and a battery holding member for holding twobutton-shaped batteries in parallel, said circuit substrate, said liquidcrystal cell and said battery holding member being housed in an insidespace of said case body, wherein a connector including a large number ofsignal terminals is connected to one side end of said circuit substratesuch that an end of said connector is exposed to the outside through oneside end of said case body; said battery holding member is arranged onthe side of the circuit substrate opposite said connector; an other endof said body casing defines a battery insertion port for mounting thetwo button-shaped batteries on said battery holding member or for takingout of said button-shaped batteries therefrom; said liquid crystal cellis arranged on an upper surface side of said circuit substrate to coversaid circuit substrate; and said battery holder is formed to besubstantially equal in width to said circuit substrate.
 27. A portableelectronic equipment according to claim 1, wherein said liquid crystalcell has a two dimensional figure substantially similar to that of saidcircuit substrate.
 28. A portable electronic equipment, comprising: acase body composed of an upper cover having a display window, a lowercover arranged at a position facing said upper cover and a framearranged along the peripheral edges of said upper cover and said lowercover to define an inside space; and inside components housed in saidinside space of said case body and including a circuit substrate, aliquid crystal cell of a size to substantially cover said circuitsubstrate, and a battery holder for holding button-shaped batteries,wherein a connector including a large number of signal terminals isbonded to one side end of said circuit substrate; said battery holder isarranged on the side of said circuit substrate opposite to theconnector, while said liquid crystal cell is arranged on an uppersurface side of said circuit substrate to substantially cover saidcircuit substrate; and said upper cover has a stepped portion in itsperipheral portion for positioning said liquid crystal cell.
 29. Aportable electronic equipment, comprising: a case body composed of anupper cover having a display window, a lower cover arranged at aposition facing said upper cover and a frame arranged along theperipheral edges of said upper cover and said lower cover to define aninside space; and inside components housed in said inside space of saidcase body and including a circuit substrate, a liquid crystal cell of asize to substantially cover said circuit substrate, and a battery holderfor holding button-shaped batteries, wherein a connector including alarge number of signal terminals is bonded to one side end of saidcircuit substrate; said battery holder is arranged on the side of saidcircuit substrate opposite to the connector, while said liquid crystalcell is arranged on an upper surface side of said circuit substrate tosubstantially cover said circuit substrate; and said frame haspositioning guides for positioning said liquid crystal cell.
 30. Aportable electronic equipment, comprising: a case body composed of anupper cover having a display window, a lower cover arranged at aposition facing said upper cover and a frame arranged along theperipheral edges of said upper cover and said lower cover to define aninside space; and inside components housed in said inside space of saidcase body and including a circuit substrate, a liquid crystal cell of asize to substantially cover said circuit substrate, and a battery holderfor holding button-shaped batteries, wherein said circuit substrate andsaid battery holder are fixed to said frame of said case body; saidbattery holder is arranged on one side of said circuit substrate; aconnector, having signal terminals, is bonded to a peripheral portion ofsaid circuit substrate on a side opposite said battery holder; and saidliquid crystal cell is arranged on an upper surface side of said circuitsubstrate to substantially cover said circuit substrate.